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A. J. BERGERON.

MACHINE FOR` SUBMARINE- SALVAGE lOPERATIONS. APPLICATION FILED MAYH,1ers.

1,304,012, Patented May 20, 1919.

5 SHEETS-SHEET l.'

A. J. BERGEHON. i MACHINE FOR SUBMAVRINE SALVAGE OPERATION-S.APPLICATION man MAYH. 191e. 1,304,012, Patented May 20, 1919.

Z? ff Mr@ A..J. BERGERON.

MAcHmi-i FOR SUBMABINE sALvAGE OPERATIONS.

APPLfcATloN FILED MMU. 191e.

'A. I. BERGERON.

MACHINE FOR SUBMARINE SALVAGE OPERATIONS.

APPLICATION FILED III'AY II. I9I6.

f R RI mm m Vw A. I. BERGERON.

MACHINE FOR SUBMARINE SALVAGE OPERATIONS.

APPLICATION FILED MAY Il. 1916.

Patented May 20, 1919.

5 SHEETS-SHEET 5- @fr ai 'UNITED STATES PATENT wie.

ALEXANDER J. BERGERON, or` DES ivioINEsIWA.

MACHINE Eon sUBiviARINE sALvAGE c,nrEieAfiIoNs.V l

vSpecification of Letters Patent. Y Patented llIay 20, 19179.

Application led May 11, 1916. Serial o. 96,956.

To all whom t may concern:

-' Be it known that I, ALEXANDER J. BER- cERoN, a citizen of the UnitedStates, residing at Des Moines, in t'he county of Polk and the State ofIowa,'haveinvented a new and useful Machine for Submarine SalvageOperations, of which the following is a specification. l

' The object of my invention is to provide Il()Y tions, adapted at alltimes to be connected Y with boats or the like on the surface-of ther-riety of operations, such as striking, pulling, pushing, grippingandjso on.

a machine for sub-marine salvage operasight glasses or the like foraffording facilities for observing under sea objects yand operations.

A further object is to provide such a device having means outside theshell controllable from within for illuminating any part of the wateraround the shell.

A- further object is to `provide in such a machine, a plurality ofltools operatively connected with the shell, controllable Vfrom withinthe shell, and adapted to be movedto a variety of positionsv and toperform a va- A` further object is to provide means, controllable fromwithin the shell, for supplying power to' and operating said tools forworking them, said means including a cylin'der and pistonsA therein,exposed to' the water pressure on one side, apair of pumps, means foralternately operatively connecting said pumps with said ,cylinder on thejecting said piston to greater pressure and -less pressure than thewaterv pressure.

A further obgect is to provide in connecf tion with the last meansabove, air cushioning devices, whereby the operation of the pumps andthe water pressure is cushioned for operating the tools with elasticforce.

A further object is to provide a process for operatinga tool under watercomprising the subjecting of one side of -a piston inl a.

sure than the normal water pressure.-

My invention consists inthe construction, arrangement and combination ofthe various parts of the device,Lwherebytheobjects cylinder alternatelyto less and greater prescontemplated are attained, as lhereinafter morefully` set forth, pointed out inl my claims and illustrated "n theaccompanying drawings, in which:

"Figure l'shows a topi or lplan view of a machine embodying myyinvention. -V F 1g. 2 Vshows vertical sectional Fig. 3 shows ahorizontal sectionalfview taken on the line 3-3 of Fig. 2.

. view rtaken on the line V42-2 of Fig. 1.?

Fig. t shows `a vertical sectionalviewV of one of the cushioningdevices.

Figi 5 shows a side elevation,l partly in vertical section of another ofsaid devices.

JFig. 6 shows a sectional view of one of the three way valves yand partsyconnected therewith.

Fig. 7 shows a detail view of one'of. theV working! tools, partly insection.

Fig. 8 shows a detail viewV partly section of another tool;l

soV

Fig. 9 shows a 'detail view -partly' in sec-` i tion of stillanothertool.

lF i'g.'10 shows a sectional Yview taken on the line 10V-l0 of Fig 9Fig. 11 shows' a sectionalA view-taken oni* the line 11i-1l of FigJfQ.

Fig. 12 shows 'a detail view in side elevation of partV of lthemechanism. Y

Fig, 13 shows' a vertical Vsectional view through the mechanism shown inFig.'12.

Fig. 14 shows a Vvertical sectional'view of I lpart of the wall oftheshell, with the three way valve casing and valve controlling hand leshown in side elevation.

Fig. 15 showsfadetail view of said handle, the dot-ted linesillustrating dier'ent positions thereof. v f

Fig. 16 shows a rear elevation of one `of 4 the propellers andthesupports therefor. other side of'said piston for alternately sub- Fig.17 shows av detailV vertical sectional v` tremendous pressureofgthewater and the consequent difficulty experienced by human beingsinl remaining at great depths.v

I lhenincased in suitable armor Vor the like, the personv working in thewater has been handicapped by the lack' of proper.'

tools. It is, therefore, my purpose to provide a shell in which theoperator can remain free from the tremendous water pressure with partsso constructed as to permit free observation of the space in thevicinity of the shell, and to provide also proper tools accessible tothe operator within the shell.

In the accompanying drawings, I have used the reference numeral 10 toindicate a shell which may be somewhat oval inform, the form employedbeing such as to best enable the shell to withstand the water pressure.The shell 10 is preferably made of steel or other very strong materialand is provided-at its upper end with a look-out tower 11 having alplurality or series of staggered sight glasses 12.

Strong cables 13 may be connected with the shell 10 for raising orlowering it, and tubes or the like 14 may be used for supplying freshair and taking away used air, and affording a conduit for electric wiresor the like.

A strong frame 15 extends rearwardly and forwardlyfrom the shell.

Transversely mounted on the frame 15 rearwardlyand forwardly of theshell are shafts 16, on which are mounted pairs of blades17, serving thepurpose of a fishs fins, or the elevating plane or rudder of anaeroplane.

Suitably mounted* rearwardly and forwardly from the shell 10 are uprightshafts 18 on which are mounted blades 19 in vertical planes, capable ofswinging when the shafts 18 are rotated for serving as steering rudders.

Mounted'for rotation in the wall of the shell 10 by means of tightjoints, are suitable `outwardly opening cylinders 20, controlled byhand-wheels 21 or other suitable means within the shell 10 (see Fig.17).

The cylinders 20 are internally screw-` thread'ed'to receive ascrew-threaded rod 22, outside the shell. The screw-threaded rod 22 isconnected by a universal joint 23 with a rod v24, which is pivoted atits outer end Y to an arm 25 on the shaft 16.

Thus it will be seen that by rotating the 'handwheel 21 the rod 22 maybe forced inwardly or outwardly for imparting rotation to the shaft 16for thereby tilting the blades 17.

Mechanism similar to that just described is used for controlling theblades 19, eXcept that there is connected with the shaft 18 an arm 27,which performs substantially the same function vas the arm 25 inconnection with the shaft 16.

Pivoted to the arm 27 is a rod 28 which is connected by a universaljoint 23 with a rod provided for controlling each ofthe shafts 16 and18. Thus it will be seen that the blades 17 and 19 may be tilted to anydesiredI position for steering or for elevating or lowering the machinewhen the propellers 26, hereinafter more particularly referred to, areoperated.

Near each end of the frame 15 is a propeller supporting frame comprisinghorizontally spaced brackets 29 preferably mounted on the frame member30. Pivoted to the brackets 29 to swing up and down, are-paralleliguides 31. The ends of the guides 31 are secured'to blocks 32which are suitably pivoted to the brackets 29 (see Fig. 16).

Between the brackets29 and respectively above and below, are vertically`spaced brackets 33 on'which are pivoted blocks 32 similar to thosealready described. vSecured to the blocks 32 last described, are `theends of parallel guides 34 adapted to swing from side to side. Theguides 31 and `34are preferably made substantially in the form ofhalfcircles, as shown in.` Fig. 1.

Slidably mounted Von the guides 34 and also on the guides 31, is abearing block 35. The parts just described *are so arranged that byswinging the guides 31 and34, the propellermay move to a greatvariety/of positions.

The propeller shaft 36 is connected by a iexible shaft 37 with the shaft3S rotatably mounted in the wall of the shell 10, by means of anysuitable water-tight packing. (See Fig. 3). The shaft 38 has a gear 39on the inside of theshell operatively connected with an lelectric motor40. Similar propeller mechanism `-isprovided at each end ofthe frame 15.

At each end of the frame one of the blocks 32 is pivotally mounted onone of the brackets 29 by means of a shaft 41- or the like, on which is'fixed a laterally extending arm 42. The arm 42 is connected by a rod42zlL and universal joint 23 similarly to tliosefalready mentioned withone of the shafts 22 mounted in-thewall ofthe shell 10 in the mannerhereinbefore described, and moves inwardly and outwardly as has beenvbefore set forth. It will be seen that when the rod 42a is movedlongitudinally, the bearing block 35 for thepro-peller will be raised orlowered.

One of the vblocks 32 near each end of the frame 15 is pivoted to one ofthe brackets 33 by means of the short shaft 44 similar to the shaft 41.On the shaft 44 is fixed a laterally extending arm 45 which is connectedby means of a rod 46 and a universal joint 23 similar to that alreadydescribed, withY lpeller up anddown andk sidewise, and by 1n- .toolsused, and the walls.

clining the blades 17 and 19 at different angles, the machine may bepropelled and guided in various directions when thepropellers arerotated by the motors 40.

I provide a variety of tools mounted'outside the shellv but controllablefrom within the shell, and for controlling and operating the tools Iprovide mechanism whereby parts of the tools are alternately subjectedto greater or less than the normal waterl pressure at the *point Ywherethe shell stands.`

I wllnow describe some of the various mechanism whereby` they areoperated. f'

I provide inside the shell two motors' 47 and 48 (Fig. 3). Outside theshell, preferably near the respective motors 47 and 48, are pumpsj51and52 'preferably in each case comprising parallel cylinders 49V and 50.

Mounted Yabove each pump is an air tank' 5,3 closed at all points exceptfor an intake and outlet opening 54 in its lower wall.

Mounted above the opening 54 inthe bottom of each air-tank 53, is acage'55 having openings in itswalls. The cage 55 holds a ball valve 56Vadapted yto coact with a suitable valve seat formed around' theopenlThe cylinders of the pump 51 are preferably provided with openings57 in their Formed around the openings -57 are valve seats with whichcoact the inwardly opening valves 58. Openings 59 lead from thecylinders 49 and 50 of the pump 51 to an intermediate chamber 6()between the lower wall ofthe air, tank 53V and theI pump 51.

f Outwardly opening valves 61 are adapted to sea in which thel shell islocated.

Connectedwith the chamber above the pump A51 is a tube 66'extendingaround the shell, and terminating at a suitable point` close theopenings 59.`

the pump 51 except that it has openings 62 in the wallsof its cylinders,controlled by outwardly opening valves 63, and that it has openings 64communicating with the. chamber 601`similar to those alreadyfdescribed,'and controlled by vinwardly opening valves 65. It should be noted thatthe openings 57 and^62, when the valves l5 0. and 63 are opened,communicate withthe waterV of the adjacent to the'last tool to 'beoperatively connected .with the pumps.

Communicating with the chamber 60 above the lpump 52 is a similar tube67 extending parallel With the tube 66 around the shell. A plurality oftools are-provided which are designed to'be connected with the pumps inthefmanner hereinafter described.- f f I shall `now describe some of thetools: j In Fig. 8 I have shown a tool member comprising a cylinder 69having a closed end .70 pivoted by the means 71 to brackets 72 on theshell Fig. 1. Slidingly mounted in `a point spaced from the outer endthereof" is a collar 7 6 which limits the outward slidling movement ofthe piston. Byv spacing the collars 74 and 7 6 from each othera'comparatively long bearing is provided for thepis-v ton 73fat alltimes sorthat even when the piston 7 3 is at the-outer limit of itsmovement it is not likely to be twisted on".

At a suitable point rbetween-the tubes 66 f and 67 is a'valve casing. 77(Figs. 6 and 14) having in its walls a passage 78 communicating with thetube 66l and a passage 7 9 Vcommunicating with the tube 67 ,and apassage 80 communicating with the 4vtube 81 which leads to andcommunicates with the rear end of the cylinder 69. Mounted in the casing77 is a three-way valve 82," having'a stem '83 which extends thro-ughthe wall of the shell by a water-tight joint yand has onits inner yendwithin the shell a controllinghandle 84 shown in Figs." JL4`and 15. `The'valve justi described is so constructed that when the handle 84 stands'1n-one position as shown by the dotted lines 84a in Fig. 15, theopening in the valve will communicate with the passages 78 and"80thereby connecting the cylinder '69 with the pump 51. When the handle 84is movedY to the position shownby full Zlines vin Fig. 15 the valve yThe pump 52 is similar in construction to 82 stands in what'may becalled neutral'position withV both passages 78 and'Vv 7 9 closed. Whenthe handle 84 is moved to the Position shown' by the dotted lines 84binfFig. '15

ythevalve '82 yis moved until] its opening communicates with thepassages 7 9an d; '80

. outside of the cylinders of the pumps 51 and 52 beveled gears 88,' inmeshwith beveled f gears A89V on shafts 90 which extend thro-ugh thewall of the shell by water-tight joints.

On the shafts 90 inside the shell are gears 91 whichmesh respectivelyvwith 'gears 92 on the shafts 'ofthe motors 47 and 48. Be-

l.fore the device is" lowered into the'water air is forced into thetanks53 Vunder pressure. The 'tank 53 connected with Apiunp 5-1 isfilled with air under pressure greater` than that of the water `at thedepth whe-re the machinefis to be used. The tank connected" with thevpump 52 is filled withair under .pressure somewhat vless than that ofthe water at the depth mentioned. .Insomuch as the operation of thepiston of the various tools is substantially the same inthe case ofallthe tools, the operation vof the piston 73 will now be described.Assuming `that the piston 73 is at the inward limit of its movement andthat it is desired to move it outwardly, the handle 84 is moved to theposition shown by the dotted lines 84il in Fig. .15, the motors arestarted, whereupon water will be pumped b-y the pump 51-'through thechamber 60 and the pipe 66 to the valve 82 and therethrough t0 the pipe81 and to the inner end of the cylinder 69. The pressure of the waterwill force the piston 73 outwardly, then the handle 84 canbe moved toits position shown by full linesin Fig. 15 and the piston 73 will beheld at its outer limit of movement. If it is desired to draw the piston73 inwardly the handle 84 is moved to its position Vshown by the dottedlines 84k whereby the valve 82 will be moved toits position forconnecting the tube 81 with the tube 67, whereupon water will bewithdrawn from thecylinder 69. .The collar 74 and the co1- lar 76 haveopenings through them as shown in Fig. 8 whereby the flange on the cap75 is subjectto the normal water pressure as is the outerend ofthe tool,.and it will thus be seen that the piston 73 will move toward its innerposition. For swinging the cylinder 69 andy other similar cylinders todifferent positions, I provide a cylinder 93 pivoted to the shell andhaving a construction similar t0 that of the cylinder 69 (Figs. 1 and2). Mounted in the cylinder 93 is al piston 94 similar except as to sizeto the piston 73, which projects outwardly and is pivoted to the collar95 in which the. piston 73 is slidably'mounted. Owing to the fact vthatlthe' cylinders 69 and 93 are pivoted at different points on the shell,it will be seen that by forcing the piston 94 inwardly and outwardly thecylinder 69 will be moved to differentpositions on its pivot point. Inthis connection it may be mentioned that the cylinders 69 and 93 andthe'other cylinders mentioned herein are mounted. on the shell by meansof universal joint pivot connections 71 Yhereinbefore referred to.

.Another cylinder' 93 is similarly connected with the collar 95. It willbe seen that by properly actuating the pistons 94 the movements of thecylinder 69 may be accurately controlled. It will be understood that thecylinder 93 will be connected with a threeway valve by a i tube 81similar to that valready described.

At theouter end of the piston 73 is mounted a head comprisin a soft ironcore `96 `which-.isconnectedwith the Vpiston73by a .ball and socketjoint'97. The soft iron core 96 is provided with suitable wiring 97a wherebythe lcore may be energized forsecuring the tube tothe iron hull of avessel.

The wiring 97a is connected by currentA conducting wires 101 withinterior of the shell.

In Figs. 7 and 9 I have shown a different form of tool, comprising acylinder 102 similar tothe cylinder 69 already described, connected bytube 8,1 with one of. the three-way valves 82. Slidably mounted in thecylinder 102 is .the piston 103. On the outer end of the piston 103 isav-jaw member104 vpivoted to which is a co-acting jaw member 105.Receiving and slidably mounted upon the jaw members 104 .and 105, is acollar 106 having rollers 106a adapted to co-act .with the adjacentsurfaces of the shanks Vofsaid jaw members. It will be seen that whenthe collar 106 ismoved longitudinally toward the cylinder 102 the jaw105 will be forced away from the jaw member 104, and when the collar 106is moved away'from the cylinder'102 the jaw members will be forcedtogether. For operating the collar 106 I have provided a piston 107slidably mounted in the hollow piston 103 and having at its inner end anannular ringer flange 1'08. The `piston 107v is tubular inform, open atits.. inner end and closed Vat its outer end. The piston 107 at its:outer endcommunicates by means of a tube 81 with one ofthethree-wayvalves 82. Itwill be seen that by properly-operatinfr the valve82 connected with the piston 107 the water can be forced into orwithdrawn from'the lhollow piston103, between the inner endthereof andthe inner` end of the piston 107, for reciprocating saidpiston 107 andoperating the jaws'104 and 105.

It appears thereforethat the jaws 104 and 105v may be movedlongitudinallyy with relation to the cylinder 102 by the reciprocationof the piston 103. The jaws can also be operated -for-grasping orreleasing objects by reciprocating the piston 107.

yThe means forV swinging the cylinder 102 to various` positions-will beihereinafter described.

In the drawings I have shown astriking tool mounted on the piston 103.

As a matter of. fact the striking tool may be supported'in lany suitableand desirable way. .The striking tool shown comprises a .hollow.cylinderu109 in which .is slidably In connection with the strikingtoolnowl being described I have sliownfa cushioning device forpreventing the piston from being forced out of the outer end of thecylinder, whichv will now be described. The rear end of the cylinder 109communicates with one of the tubes S1. Interposed between the tube S1and the end of the cylinder109 in communication therewith is areceptacle 114 having, formed therein ra valve seat 115 shown in Fig.13. Pivoted within the receptacle 114 is a gate valve 116 adapted tocoact with the seat 115 and having a stem 117 projecting through thewallof the receptacle 114. Fixed on the stein 117 at its 'outer end isan arm 11S. Wound on the cylinder 109,

' near the forward end thereof is a coil spring 119, one end of which isextended into a horicylinder 109 near its forward or outer end as shownin Figs. 9 and 11. The other end of spring 119 is pivoted to a link 121.Said link 121 is pivoted to the arm 11S.

The operation of the parts just described is as follows: The spring 119normally holds the valve 116 in its open position. Then the tool 112 isin its retracted position with the piston 110 near the inner end of thecylinder 109 the valve and the parts are left subj ected to the normalwater pressure and the valve 116 is open. viAssuming that the propervalve S2 is manipulated to put the cylinder.

109 into communication with the tube 66 whereby the piston 110 issubjected at its inner end to greater pressure than that of thesuirounding water, the piston 110 will be driven outwardly and byadjusting the tool the member 1712v can be used as a chisel or ax. Ifthe tool 4should not be properly adjusted for the first stroke it willbe seen thatthe piston 110 would tend to drive out the blocks 113.Thisjundesirable result is, however, avoided Aby the use of the partshereinbefore described. The piston 110 .beforereaching the members 113engages the inwardly projecting end ofthe spring119 and operates saidspring for lclosing the positions of its movement the followingmechanism is provided. Y

,Y Qn ,the cylinder 102 is a collar 130 pivoted onto which is asegmental gear 131.

4ll/lountedon the shell 10 is a cylinder 132 connected by a tube 81 withone of the threeway valves 82.

Vithin the cylinder 132 is a piston similar to the piston 73 having astem 133, the end of which is inclined upwardly and is pivoted offcenter to a segmental rack 134 Vin mesh with the gear 131.

By reciprocating the piston in the cylinder 132 the rack 134 is operatedfor rotating.

thel gear 131 and for thereby raising and lowering the outer end of thecylinder 102.

Pivoted on the shell 10 is a cylinder 122 shown in Fig. 1, communicatingby means of 'a tube S1 with one of the valves82. Slidably mounted in thecylinder 122 is a piston 1 23 on the outer end of which is an electriclight device V124 of any suitable construction. F or swiiiglng thecylinder 122 suitable devices 124 siinilar to those herein repeatedlydescribed are employed.

It will be understood thatV the wires'101, shown in Fig.l 8 are extendedthrough the wall of the shell 10 by a water-tight vjoint and aredesigned to be connected with a suitable source of electrical-energy.The lighting devices 124 may be similarly connected with batteries orthe like.

l'he particular kind of tools herein shown and illustrated are shownlargely for the purpose of suggestion and it should be understood agreat variety of tools, kin slightly different forms for accomplishingdierent purposes, maybe employed yand operated in a manner similar tothat above described. The most important feature as I view it at thistime -in connection with the operation of these various tools, exists inthe construction o f parts whereby the pistons are most of thetimesubjected to the normal water pressure at the depth where the shellis located and in the arrangement of the mechanism wherejecting it togreater o-r less pressure than the normal water pressure.

In the practical operation of my improved machine for sub-marinesalvageoperations the .parts are assembled and prepared for use. Theshell 10 is closed and lowered into the water by means of theconnectingcables and the like 13. Air and electrical power may befurnished through the tube 14. The cables 13 may be given plenty ofslack and by operating the blades 17 and 19 and the propellers the shellmay be steered and propelled in any direction. When the sought forobject, for instance the hull of a sunken vessel, Vis reached theoperator probably will iirst manipulate his lights to make a thoroughobservation of the wreck and the bottom of the sea surrounding it. Thevariousy either pump the sea water into or out of the cylinders and therelative power securedy is practically the same at all depths. Onaccount of the fact that the elasticity of water is not great, I haveprovided the air tanks 53 for cushioning the strokes of the pistons.

In this connection it may be mentioned that when the device is to besent down any desired depth or" water it maybe so weighted that it willnormally drop tothe bottom and rest there in such condition as to beno-t quite buoyantQ The various propellers and blades .can then beusedfor moving it about from place to place, and of course, where wrecks,rocks or other solid matter are to be raised, the c"suche-1" device maybe used for securing the shell in any desired position.

It will be readily understood that numerous changes may be made in thearrangement and construction of the various parts of my improved machineand it is my intention to cover by my present application any suchchanges in vconstruction which may be included within the scope of myclaims.

I claiml. In a device of the class described, a water tight chamber, apair ot motive power devices therein, a pair of water pumps outside saidchamber, means for operating said pumps from said motive power device, acylinder having a piston therein, said cylinder being open on one sideof the piston to the pressure of the water surrounding the device, meansfor alternately connecting said piston wit-hin said cylinder on theopposite side thereof to the action of the respective pumps, and meansfor subjecting water passing through said pumps to the cushioning eiiectof air under pressure, respectively, greater and less than that of thesurrounding water.

2.' In a device of the class described, a tool for submarine workcomprising a cylinder, a piston mounted therein for reciprocation, atool member connected with said piston, said cylinder having an openingfor permitting one end of the piston to be in communication with thespace outside the cylinder, a tube communicating with the cylinder'onthe other side of the piston from said opening,-a valve casing in saidtube,

pump devices adapted to be selectively7 con-.

nected with said tube for subjecting one end of said pistonto greater orless pressure than that of the space outside the cylinder, a valve insaid casing, a spring operatively connected with said valve and adaptedto be engaged by said piston in one position of said movement.

3. In a device of the class described, a tool for'submarinework'co'mprising a cylinder,

a piston mounted therein for reciprocation, a tool member connected withsaid piston, said cylinder having an opening for permitting one end ofthe piston to be in communieation with the space outside the cylinder, l

a tube communicating with the cylinder on the other side of the pistonfrom said opening, a valve casing in said tube, pump devices adapted tobe selectively connected with said tube for subjecting one end ofsaidpiston to greater or less pressure than that oit' the space outside thecylinder, a valve in said casing, a spring-operatively connected withsaid valve and adapted to be engaged by said piston in one position ofsaid movement, a shell for supporting said cylinder, said pump devicesbeing operable from within said shell.

4. In a device of the class described, a hollow shell, a propellerarranged outside said shell, means for supporting said propeller forpermitting it to'be swung laterally, said means being capable ofvertical pivotal movement, means Vfor supporting said propeller forpermitting it to be swung vertically, said means being capable of hori-Zontal,. pivotal movement, and means for imparting rotation to saidpropeller in all positionsof its movement.

5. In a device of the class described, a hollow shell, a' propelleroutside of said shell, a pair of guide devices for supporting saidpropeller for permitting it to be swung laterally, said guide devicesbeing pivoted at their ends for permitting them to be swung vertically,a second pair of guide devicesfor'supporting said propeller forpermitting it to swing vertically, said second pair of guide devicesbeing pivoted at their ends to permit them 'to swingfhorizontally, meansfor operating said propeller in all posit-ions of its'movement, andmeans for moving said guide devices on their pivot points.

G. In a device of the class described, a hollow shell, aframe projectingaway therefrom, a propeller arranged within the outline of said frame,means for supporting said propeller for permitting it to be swunglaterally said meansbeing capable of vertical pivotal movement, meansfor supporting said propeller for permitting it to be swung vertically,said means being capable of horiaontal, pivotal movement, means forimparting rotation to said-propeller in all positions of its movements,a blade pivotally mounted 'within the outline of said frame capable ofup andv down movement, and a blade mounted within the outline of saidframe capable of lateral, swinging movement. j

Des Moines, Iowa, April 24, 1916.

ALEXANDER J. BERGERO'N.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

